Figure REF  (right) shows a graphical summary of the individual final-state measurements, the combined measurement,
the \(Z\rightarrow \mu ^+\mu ^-\)  measurement of Ref. [1]}, and a theory prediction.
The theory calculation uses DYNNLO [2]} with the MSTW08 next-to-next-leading-order parton distribution functions set [3]}.
The results are all in good agreement.
